Lupin the 3rd finds himself in an unexpected bind when Inspector Zenigata gets arrested and framed as the mastermind behind his greatest heists. The accusation stings Lupin's ego enough that he takes the bait from wealthy manipulator Roy Forest: steal the Time Crystal, a classified supercomputer capable of breaking any encryption, within seven days. What should be a straightforward job spirals into something far more complicated when Lupin notices Jigen acting like a stranger, withdrawn and secretive in ways that don't fit the thief he's known for years. A missing piano prodigy enters the picture, and the connections between these seemingly unrelated threads start to form a darker picture than anyone anticipated. As Lupin chases the Time Crystal and tries to understand what's happened to his closest partner, he begins to realize this job might cost him more than money or time. Personal loyalty gets tested when profit collides with the bonds that define him.